I've been feeling like I've missed a beat sometimes, mostly when I'm resting. Could you help me understand what this condition might be and if I should be worried about it?

The sensation of "skipping a beat" is known as palpitations. It can be caused by various factors such as stress, anxiety, caffeine intake, or underlying heart conditions. Since you feel it mostly when you are resting, it could be related to an irregular heart rhythm called premature ventricular contractions (PVCs). To manage this condition, you can try to reduce stress and caffeine intake. If the palpitations persist or worsen, you may consider taking a beta-blocker like Metoprolol. However, it is important to consult with a healthcare professional for a proper evaluation and diagnosis.